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MGN12 and MGN9 alignment clamp for precision rail centering — image 1
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MGN12 and MGN9 alignment clamp for precision rail centering

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design for linear rail alignment clamp for 2020 extrusions

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I tried many other alignment guides but found they always had a certain amount of play in them

I created this design which consists of an inner piece which is a snug fit for rail and extrusion but has some flex in it.

Then there are 2 clamps, one to clamp to the rail, and another to clamp to the extrusion. I found this gives me a snug fit with absolutely no play and consequently no rail binding

Print with 4+ walls and 15%+ infill

Note: important to use precise X-Y walls and print the parts in the orientation shown

 

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